Walmart (WMT 0.60%) is one of the most valuable companies in the world, with a market cap that's just over $1 trillion.

The company also recently posted strong earnings numbers that beat expectations on both the top and bottom lines.

But despite this, the stock hasn't been surging -- it could be a sign that investors are worried about its price.

While the business is sound and its financials are robust, investors should always consider a stock's valuation before investing in it.

And with Walmart, its valuation looks incredibly high.

The big question is whether it has gotten too expensive, or if it can still be a good buy right now.

Walmart's growth has been solid, but is it really that impressive? Walmart is a dominant force in retail because its big-box stores function as one-stop shops for customers.

From day-to-day essentials like groceries to discretionary purchases such as toys and electronics, it attracts a wide range of customers.

Plus, its growing delivery options make shopping at Walmart even easier without having to leave your home.

But despite its resiliency, its growth rate has typically been in the single digits, averaging around 5% in recent years.

WMT Revenue (Quarterly YoY Growth) data by YCharts The growth....